Lamp shade supporting device for extractors



iwm'dm 3, 1Q49, Q E, WOODS LAMP SHADE SUPPORTING DEVICE FOR EXTRACTORS Filed Aug. 25, 1947 INVENTOR. 650/1. f. W004i Patented Mar. 8, 1949 LAMP SHADE SUPPORTING DEVICE FOR EXTRACTORS Cecil Edward Woods, Denver, 0010., assignor to The Specialty Manufacturing (30., Denver, (3010.,

a corporation Application August 25, 1947, Serial No. 770,345

7 Claims. I

This invention relates to means for supporting hollow, fragile articles, such as lamp shades, within a centrifugal extractor. In dry cleaning establishments centrifugal extractors are used to remove the cleaning solvent from the articles being cleaned. This removal is accomplished by whirling the articles in a basket to throw off the solvent by centrifugal action.

It is exceedingl diflicult to remove the solvent from dry cleaned lamp shades by such a method. If the shades are placed in the conventional extractor basket, they will be beaten and crushed against the sides of the basket while whirling.

The principal object of this invention is to provide a simple and easily applied attachment for a conventional extractor which will support a lamp shade concentrically within the whirling basket so that the shade will be smoothly and uniformly whirled to throw the solvent therefrom Without damage to the shade.

Another object is to so construct the device that it can be applied to any of the standard extractors without the use of tools and without damaging the extractor.

Other objects and advantages reside in the detail construction of the invention, which is designed for simplicity, economy, and efficiency. These will become more apparent from the following description.

In the following detailed description of the invention, reference is had to the accompanying drawing which forms a part hereof. Like numerals refer to like parts in all views of the drawing and throughout the description.

In the drawing:

Fig. 1 is a side view of a conventional extractor partially in section, illustrating the invention in place therein;

Fig. 2 is a plan View of the extractor with the invention therein;

Fig, 3 is a detail, perspective view of the complete invention; and

Fig. 4 is a detail section, taken on the line 4-4, Fig. 3.

In the drawing, the outer bowl of a conventional extractor is illustrated at ill, with its whirling basket at l I. Such baskets are provided with an annular, rounded rim l2 surrounding the top opening in the basket.

This invention comprises a central yoke member l3, resembling an ordinary turnbuckle. The yoke member I3 is elongated and provided with an elongated slot [4. Threaded rod openings extend through the yoke member from each extremity of the slot l4. These openings are de- 2 signed to receive a left-hand threaded rod l5 and a right-hand threaded rod 16.

Each rod terminates at its outer extremity in an arcuate grooved shoe IT. The shoes extend across the extremities of the rods to form a T- shaped assembly. The are of the shoes conforms to the are of the rim l2, and the groove in the shoes corresponds to the rounded inside edge of the rim l2.

It can be readily seen that, if the shoes I! are placed against the inside edges of the rim l2 and the yoke member I3 is rotated, it will act, clue to the right and left-hand threads on the rod, to expand the shoes I! outwardly against the inside of the rim I2 to firmly lock the rods and. yoke in place across the diameter of the basket II.

The device can be locked in its expanded position by means of a winged lock nut l8, which is threaded on the rod it so that it can be clamped against the yoke IS.

A threaded stud [9 extends vertically through the mid-portion of the slot l4 and is clamped in place on the yoke member l3 by means of a clamping nut 20, there being a clamping washer 2| positioned above and below the yoke l3 to be clamped thereagainst by the action of the nut 20. The threaded stud !9 extends downwardly from the nut 20 to receive a threaded clamping nut 22.

The usual lamp shade consists of a suitable wire frame covered by means of fabric 23. A plurality of radius wires 24 extend across the open top of the covered frame, terminating in a central fixture bushing 25, by means of which it is attached to certain types of lighting fixtures or lamps.

The lamp shade is attached to this invention by slipping the fixture bushing 25 over the stud l9 and clamping it in place thereon by means of the winged clamping nut 22.

In use, the lamp shade is lowered into the extractor basket II, the rods l5 and 16 are placed across the rim l2 thereof, and the yoke member I3 is rotated to extend and clamp the rods rigidly in position. The yoke is then turned with the stud l9 facing downwardly, and locked in place by means of the lock nut l8. The shade is then raised to position the fixture bushing 25 about the stud [9, where it is clamped firmly in position by means of the clamp nut 22.

The basket is now started whirling as usual. The lamp shade rotates about its axis, which is in alignment with the axis of the basket, and the solvent is thrown from the fabric 23 through the basket II to the bowl Ill. The shade never contacts the sides of the basket, and since it rotates concentrically, there is no distortion or bending of the shade. The shade is removed by simply removing the clamp nut 22.

While a specific form of the improvement has been described and illustrated herein, it is desired to be understood that the same may be varied, within the scope of the appended claims, without departing from the spirit of the invention.

Having thus described the invention, what is claimed and desired secured by Letters Patent is:

1. A device for supporting a lamp shade in a centrifugal extractor of the type having a whirling basket with an open rim, comprising: a supporting member positioned diametrically across and within said rim; means for expanding said supporting member against the inside of said rim; and means for attaching a lamp shade to the supporting member at the mid-point thereof.

2. A device for supporting a lamp shade in a centrifugal extractor of the type having a whirling basket with an open rim, comprising: an extensible supporting member; an arcuate shoe on each extremity of said supporting member, adapted to engage the inner surface of said rim; means for extending said supporting member outwardly to force said shoes against the inside of said rim; and means for attaching a lamp shade at the middle of said supporting member.

3. A device for supporting a lamp shade in a centrifugal extractor of the type having a whirling basket with an open rim, comprising: a pair of arcuate shoes adapted to be positioned inside said rim at diametrically opposed points; a threaded rod extending radially inward from each shoe; a rotatable yoke member threaded on the two rods and joining the same, the threads on the rods being in opposite direction so that rotation of said yoke member will force said shoes outwardly against said rim; and means at the middle of said yoke member for supporting a lamp shade.

4. A device for supporting a lamp shade in a centrifugal extractor of the type having a whirling basket with an open rim, comprising: a pair of arcuate shoes adapted to be positioned inside said rim at diametrically opposed points; a threaded rod extending radially inward from each shoe; a rotatable yoke member threaded on the two rods and joining the same, the threads on the rods being in opposite direction so that rotation of said yoke member will force said shoes outwardly against said rim; a threaded stud secured at the middle of said yoke member and extending downwardly therefrom; and means for attaching a lamp shade concentrically about said stud.

5. A device for supporting a lamp shade in a centrifugal extractor of the type having a whirling basket with an open rim, comprising: a pair of arcuate shoes adapted to be positioned inside said rim at diametrically opposed points; a threaded rod extending radially inward from each shoe; a rotatable yoke member threaded on the two rods and joining the same, the threads on the rods being in opposite direction so that rotation of said yoke member will force said shoes outwardly against said rim; a threaded stud secured at the middl of said yoke member and extending downwardly therefrom and adapted to receive a lamp shade; and a clamping nut on said stud for clamping the lamp shade thereon.

6. A device for supporting a lamp shade in a centrifugal extractor of the type having a whirling basket with an open rim, comprising: a pair of arcuate shoes adapted to be positioned inside said rim at diametrically opposed points; a threaded rod extending radially inward from each shoe; a rotatable yoke member threaded on the two rods and joining the same, the threads on the rods being in opposite direction so that rotation of said yoke member will force said shoes out-,

wardly against said rim; and means at the middle of said yoke member for supporting a lamp shade, said shoes being curved longitudinally and transversally to fit the contour of the inside of said rim.

'7. A device for supporting a lam shade in a centrifugal extractor of the type having a whirling basket with an open rim, comprising: a supporting member positioned diametrically across and Within said rim; means for expanding said supporting member against the inside of said rim; means for attaching a lamp shade to the supporting member at the mid-point thereof; and means for locking said frame member in the expanded position.

CECIL EDWARD WOODS.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 430,632 Doremus June 24, 1890 598,296 Snyder et a1 Feb. 1, 1898 704,403 Thill July 8, 1902 1,889,761 Schlesinger Dec. 6, 1932 2,387,300 Ronci Oct. 23, 1945 

